Sundyne LMC 341F Manual

SUNDYNE
LMC 341F COMPRESSOR
Instruction and Operation Manual
August 2007
Effective: August 2007 Visit our website at www.sundyne.com

COPYRIGHT
All rights reserved. No part of this publication may be reproduced, stored in a
retrieval system or transmitted in any form or by any means, electronic,
mechanical, photocopying, recording or otherwise without the prior permission
of Sundyne Corporation.
©2007 Sundyne Corporation
WARRANTY
Sundyne Corporation warrants to Buyer for a period of twelve (12) months from the
date of being placed in service (but not to exceed eighteen (18) months after the
date of shipment) that the equipment at the time of shipment will be free from
defects of design, material and workmanship. If any defects or malperformance
occur during the warranty period, Sundyne’s sole obligation shall be limited to
alteration, repair or replacement at Sundyne’s expense, F.O.B. Factory, of parts or
equipment, which upon return to Sundyne and upon Sundyne’s examination prove to
be defective. Equipment and accessories not manufactured by Sundyne are
warranted only to the extent of and by the original manufacturers’ warranty. Sundyne
shall not be liable for damage or wear to equipment caused by abnormal conditions,
vibration, failure to properly prime or to operate equipment without flow or caused by
corrosives, abrasives or foreign objects. THE FOREGOING WARRANTY IS
EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, WHETHER
EXPRESSED OR IMPLIED INCLUDING ANY WARRANTY OF
MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. In no
event shall Sundyne be liable for consequential or incidental damages.

INTRODUCTION AND SAFETY.....................................................................................1
Text Symbols.............................................................................................................................................................1
Equipment and Safety Precautions .....................................................................................................................1
EXPLOSION/FIRE HAZARD..........................................................................................2
USING THIS MANUAL:..................................................................................................3
1. INSTALLATION..........................................................................................................4
INTRODUCTION TO THE SUNDYNE COMPRESSOR .................................................5
Inspection...................................................................................................................................................................5
Short-term Storage...................................................................................................................................................5
Long-term Storage ...................................................................................................................................................5
Installing the Suction and Discharge Piping - Guidelines.............................................................................6
Seal Environment Control System.......................................................................................................................7
Baseplate Grouting..................................................................................................................................................9
Horizontal Unit Gearbox Support Bracket .........................................................................................................9
Driver and Coupling.................................................................................................................................................9
2. LUBRICATING OIL SYSTEM.....................................................................................9
3. START-UP................................................................................................................13
Compressor Control During Start-Up................................................................................................................14
Run-In of the Compressor....................................................................................................................................14
4. SERVICING ..............................................................................................................15
Regular Maintenance.............................................................................................................................................15
5. MAINTENANCE OF THE SEALS AND PROCESS END DISASSEMBLY ..............16
Tandem Seal Configurations...............................................................................................................................16
Double Seal Configurations.................................................................................................................................16

Procedure for Disassembling Process End.....................................................................................................16
Vertical units without a driver stand..................................................................................................................17
Vertical units with a driver stand........................................................................................................................17
BMC Units.................................................................................................................................................................17
Tandem Seal Disassembly...................................................................................................................................19
Impeller/Diffuser Cover Alignment.....................................................................................................................24
Impeller/Diffuser Clearance Calculation...........................................................................................................27
6. GEARBOX DISASSEMBLY .....................................................................................30
7. INSPECTION OF DISASSEMBLED HARDWARE...................................................44
8. CHECKING AND SETTING HIGH SPEED SHAFT END PLAY...............................48
9. GEARBOX AND PROCESS END REASSEMBLY..................................................50
Gearbox Auxiliary Hardware Installation..........................................................................................................53
10. TROUBLESHOOTING............................................................................................54
11. OPERATION...........................................................................................................57
12. SPARE PARTS.......................................................................................................58
13. SUNDYNE COMPRESSOR WARRANTY..............................................................62
Critical Start-up Checklist ....................................................................................................................................62
Lock-out/Tag-out Guidelines...............................................................................................................................64
SINGLE SEAL ARRANGEMENT..........................................................................................................................65
DOUBLE SEAL ARRANGEMENT........................................................................................................................66
TANDEM SEAL ARRANGEMENT........................................................................................................................67
PHOENIX COMPRESSOR DRAWINGS ......................................................................68

1
Introduction and Safety
Text Symbols
The following symbols may be found in the text
of this manual.
They have the following meanings:
WARNING: Text accompanied by this
symbol indicates that failure to follow
directions could result in bodily harm or
death.
ELECTRICAL HAZARD: Text
accompanied by this symbol indicates
that failure to follow directions could result
in electrical damage to equipment or
electrical shock.
RECOMMENDED: Text accompanied by
this symbol indicates recommended
usage.
REMINDER: Text accompanied by this
symbol indicates a reminder to perform
an action.
EQUIPMENT USE ALERT: Text
accompanied by this symbol indicates
that failure to follow directions could
result in damage to equipment.
Equipment and Safety Precautions
Sundyne Corporation manufactures
compressors to exacting International Quality
Management System Standards (ISO 9001) as
certified and audited by Lloyd’s Register Quality
Assurance Limited. Genuine parts and
accessories are specifically designed and tested
for use with these products to ensure continued
product quality and performance. Sundyne
cannot test all parts and accessories sourced
from other vendors; incorrect design and/or
fabrication of such parts and accessories may
adversely affect the performance and safety
features of these products. Failure to properly
select, install or use authorized Sundyne pump
parts and accessories is considered misuse and
damage or failure caused by misuse is not
covered by Sundyne’s warranty. Additionally,
modification of Sundyne products or removal of
original components may impair the safety of
these products and their effective operation.
CAUTION
Sundyne compressors may handle hazardous,
flammable, and/or toxic fluids. Proper personal
protective equipment should be worn.
Precautions must be taken to prevent physical
injury. Residual fluids must be handled and
disposed of in accordance with applicable
environmental regulations.
Note: Safety procedures must be applied
prior to any installation, maintenance,
or repair of a Sundyne compressor.
Failure to follow safety precautions may
lead to injury!

2
Wearing Personal Protective
Equipment
To ensure safety, protective equipment must be
worn at all times when installing, performing
maintenance, or repairing equipment. The
following safety recommendations must be
adhered to for optimum safety:
•Safety glasses, with the minimum
requirement of side shields, must be worn
at all times.
•Steel-toed shoes must be worn when
lifting equipment greater than 15 pounds
(7 kg) or if pallet jacks or forklifts are
operated.
•Hearing protection is strongly
recommended at all times when noise
levels exceed 85 dB during an eight (8.0)
hour period.
Note: Chemical resistant gloves must be used
if chemicals are utilized (refer to Using
Chemicals for additional information).
Note: A dust mask respirator must be worn if
chemicals have warning labels
regarding fumes, dust, or mists.
When using more than one piece of protective
equipment, consider their compatibility. For
example, safety glasses will not interfere with
hearing protection equipment. Be sure to clean
all pieces of personal protective equipment
immediately after each use.
Using Forklifts
Any persons operating a forklift must have an
active recognized operator license.
Note: Before initializing forklift operation,
verify that the lift is in a safe operating
position.
Ensuring Electrical Safety
All electrical sources must be powered-off
before installation, service, or repair of
equipment occurs.
Note: Sundyne recommends that a Lock-
out/Tag-out program be followed prior
to altering the equipment. Locks or
tags must be provided to warn
employees that equipment is
temporarily unavailable.
Once all work has been completed, the person
installing the lock or tag must remove it
according to company procedure.
Testing Equipment
Prior to performing a test on newly installed,
maintained, or repaired equipment; all personnel
in the immediate area must be warned.
Note: Follow company procedures prior to
equipment testing at all times.
Using Chemicals
Any chemicals to be used must be accompanied
by a relevant material safety data sheet (MSDS),
in accordance with government legislation. If
applicable, use chemical proof gloves.
Note: An eye wash station (or equivalent)
should be available in the event of
injury. If any hazardous or flammable
chemicals pass through the equipment,
a complete decontamination of the
equipment is required.
Protection from Falling
Fall protection and associated preventative
measures are required when working on
equipment located six feet or higher from the
ground.
Note: Follow company fall prevention
procedures prior to working on
equipment.
Preventative Machine Guards
Preventative guards must remain in place on all
equipment.
Note: Only remove the guards while
performing maintenance or repair.
Replace the guards immediately after working
on the equipment and prior to start up.
EXPLOSION/FIRE HAZARD
Note: Never use an acetylene torch, open
flame, or heat to attempt to remove
parts that have seized together in
Sundyne equipment. Any residual
process gas or liquid that is flammable
can result in an explosion or fire with
potential for serious injury or death.

3
Using This Manual:
Organization
This manual is part of the final data package for the Sundyne LMC/BMC Phoenix compressor. In addition
to this manual, the final data package includes such information as the following:
Drawings, Sundyne specification sheet with test performance curves, test data, inspection data, material
certificates if required; and auxiliary equipment information. When using the specification sheet, section 1
of the final data package, and drawings, last section of final data package, in this manual compare the
release date with those in the maintained final data package to ensure that you are using the most
current information. This manual explains procedures for the Sundyne compressor, including how to:
install it, maintain it, service it, troubleshoot problems; and order parts. Whenever you talk or write to your
Sundyne representative, provide your compressor’s unique serial number.
This manual contains the following sections:
1. Installation
Describes how to install the compressor and how to store it until you install it.
2. Lubricating Oil System
Provides the following information: how to prepare the gearbox for start-up; how the lubricating oil
system works; and specifications for gearbox lubricants.
3. Start-up
Provides a procedure for starting and controlling the compressor. A critical start-up checklist is
included as Reference A.
4. Servicing
Provides procedures for servicing the compressor.
5. Maintenance of the Seals and Process End Disassembly
Provides procedures for disassembling the LMC/BMC compressor and its seal housings.
6. Gearbox Disassembly
Provides procedures for disassembling & reassembling the gearbox of the compressor.
7. Inspection of Disassembled Hardware
Provides procedure for inspecting the disassembled hardware.
8. Checking and Setting High Speed Shaft End Play
Provides procedure for checking and setting high speed shaft end play.
9. Gearbox and Process End Reassembly
Provides detailed reassembly procedure of gearbox and process end.

4
10. Troubleshooting
Provides tables for the following:
a) Looking up a problem.
b) Identifying the possible cause.
c) Selecting the corrective action.
11. Operation
Provides general guidelines for controlling a compressor such as surge control, suction throttling,
discharge throttling, and speed control.
12. Spare Parts
Contact and reference information.
13. Sundyne Compressor Warranty
Provides a warranty statement for the compressor/gearbox unit.
Reference A
Critical Start-up Checklist
Reference B
Lock-out/Tag-out Guidelines
Reference C
Seal Arrangement Drawings for single, double, and tandem configuration
Reference D
Phoenix Compressor/Gearbox Drawings
1. Installation
This section provides an introduction to the compressor, procedures for inspecting and installing it, and
procedures for storing it if you are not installing it immediately. It contains a subsection on each of the
following:
Introduction: This provides a brief description about the compressor and how it is used.
Inspection: As soon as you receive the compressor, inspect it thoroughly.
Short-term Storage: If the unit will be installed within 6 months follow these procedures.
Long-term Storage: If the unit will not be installed within 6 months follow these procedures.
Suction and Discharge Piping: Follow these procedures to set up the piping for suction and discharge.
Seal Environment Control System: Follow these procedures to set up the seal environment controls,
even if you use the standard system supplied by the factory.
Baseplate Grouting: Use this information for applying grouting to the baseplate.
Horizontal Unit Gearbox Support Bracket: Follow these procedures to drill and pin the gearbox
support bracket on a horizontal unit.
Driver and Coupling: Follow these procedures to align the driver and the compressor. Do this after
grouting, and before you connect the piping for suction and discharge.

5
Introduction to the Sundyne Compressor
Sundyne LMC/BMC compressors have a single stage with an integral gearbox. It increases the pressure
of a continuous flow gas by applying centrifugal action. Sundyne LMC/BMC compressors are most
commonly used in chemical process plants to increase the pressure in a recycle loop. They are also used
in refineries, petrochemical plants, and power generation plants. Within these facilities, Sundyne
Compressors are used in booster, regeneration, vapor recover, boil-off, and other gas process
applications.
Sundyne LMC/BMC compressors offer industrial quality in a compact unit that is simple to assemble. It
provides high-energy performance and competitive efficiencies. For detailed specifications for Sundyne
LMC/BMC compressors, see the specification sheet and bill of materials or consult Sundyne
Compressors. For the primary components, see Reference D, compressor /gearbox module
drawings.
Inspection
1. When you receive the Sundyne LMC/BMC compressor, check for any damage. If you find any, inform
the carrier and Sundyne promptly.
2. Use Outline drawings in the final data package to ensure that all auxiliary items are properly included.
3. Check the gearshaft carefully. Seal drag may cause it not to turn freely at first. This is normal. But if
the gearshaft binds, it may be damaged, or it may need adjusting.
Short-term Storage - 1 day to 6 months
1. If the compressor is to be stored near strong chemicals or salt water, protect it immediately. To do
this, follow steps 5 through 11 from the long-term storage procedures below.
2. Protect the unit from moisture and dust.
3. Make sure that the factory’s shipping covers for the housing flanges and the seal ports are securely
in place.
4. Carefully follow the instructions provided by the manufacturer of the motor or turbine driver.
Long-term Storage - 6 months or more
If you store the LMC/BMC compressor for a long period of time, the methods you use are very important.
Please contact Sundyne at (303)-425-0800 USA and ask for the Field Service Department for further
instructions.
1. Be sure the storage area has: Humidity below 65%; and temperature range from 45° to 85°F
(7°C to 29°C).
2. Do not allow contact of airborne chemicals with the internal components of the unit.
3. If the unit is being stored near strong chemicals or salt water, protect it immediately.
4. Protect the unit from moisture and dust.
5. Make sure that the factory’s shipping covers for housing flanges and seal ports are securely in place.

6
6. Prevent corrosion to the components of the gearbox and the fluid-end.
7. Store the unit indoors.
8. Keep the room temperature and humidity constant.
9. Use desiccant bags to absorb moisture.
Either of the following:
10. Purge the internal components with an inert gas.
or
11. Oil flooding of component internals
Review Long Term Storage Instructions supplied with Final Data Package. Should you have any
questions, contact the factory in Arvada, Colorado.
After long-term storage, have an authorized Sundyne service engineer inspect all components and
supervise any necessary repair to be sure that they work properly. Any components not made by
Sundyne (except mechanical seals) must be inspected or replaced as determined by the
manufacturer’s authorized personnel, at the purchaser’s expense. Any Field Service work must be
clearly stated at the time of purchase to validate an Extended Warranty.
Because storage location and unknown factors at the site or storage are beyond our control,
Sundyne does not accept any liability for damage to the equipment during storage, nor do we
guarantee the quality of the equipment during and after the storage period. An Extended Warranty
will be null and void if the proper equipment preparation is not maintained.
Installing the Suction and Discharge Piping - Guidelines
Step 1: Clean the suction line.
Step 2: Install a strainer to protect the impeller from damage by mill scale, welding slag, or other
foreign particles.
Step 3: Make sure that the piping is aligned with the compressor flanges.
Step 4: Support all piping independently of the compressor.
Step 5: When you move the piping into place, never use excessive force at the flanged suction and
discharge connections. This could strain the unit.
Step 6: Use suction pipe that has a diameter at least as large as the diameter of the suction inlet of
the compressor.
Step 7: Make sure that the suction and discharge piping have no unnecessary elbows, bends, and
fittings. These increase the losses caused by friction. Also, be sure that all piping and fittings
are large enough to minimize losses caused by friction.
Step 8: Before you connect the piping to the compressor, tighten the hold down-bolts on the
compressor.
Step 9: Do not use elbow parts near the suction flange. A straight pipe run of at least 3 times the pipe
diameter is desirable between an elbow and the suction flange.

7
Step 10: Use block valves on both suction and discharge pipes to isolate the compressor during
shutdown, minimize process leakage, and reduce the likelihood of backflow through the
compressor, which can cause reverse rotation.
Seal Environment Control System
For the seal used with the compressor, always maintain the environment shown on the specification
sheet for your unit. For some arrangements and applications, you may need a system to control the seal
environment. For many applications, you can obtain a standard system from the factory. Make sure that
the system is installed properly and that the ports are open or plugged, as applicable. See Outline
drawing in the Final Data Package. Always be sure to leave port 1 free to drain leakage from the
gearbox oil seal and vent the gas seal.
You must vent case drain port 1 to atmospheric pressure and allow it to gravity drain properly. Otherwise
oil could contaminate the outboard gas seal. This port can be attached to a flare line, but should not have
back-pressure in excess of 5 psi.
A. GAS BUFFER SYSTEM – A gas buffer system must be used with double gas seals to prevent
process gas leakage out of the compressor. The buffer must be a cooled, dry, filtered gas, which
is compatible with the process gas and the compressor metallurgy. The buffer is introduced into
seal port 7 at a pressure range of 40 to 80 psi (2.8 to 5.6 kg/cm2) greater than compressor
suction pressure (max. of 160 psig – 11.2 kg/cm2) and at an average temperature no higher than
250°F (121°C). Part of the buffer flows across the lower seal into the process gas and part flows
across the upper seal and is vented from port 1. A buffer flow of 1.0 to 2.0 scfm (0.028 to 0.056
Nm3/min) must be maintained through the seal cavity, and should be regulated by a valve or
orifice on port 2. It is also acceptable to provide a buffer into port 2 and regulate by a valve or
orifice out of port 7. The buffer system must be in operation prior to starting the compressor.
Refer to compressor specification sheet for specific buffer requirements.
A buffer gas may also be used between tandem seals to reduce process leakage when buffer
contamination of the process gas is not permissible. Contact the factory for buffer pressure and
flow requirements.
B. LIQUID BUFFER SYSTEM – A liquid buffer system is used with double liquid seals and is
functionally identical to a gas buffer. The buffer liquid is introduced into port 7 or 2, allowed to flow
through the seal cavity, and out the opposing port.
Buffer flow should be 0.5 to 3 gpm (2 to 12 liters/min) with an inlet temperature of 60° to 120°F
(16° to 49°C), and inlet pressure a minimum of 20 psi (1.4 kg/cm2) above process suction
pressure.
If a closed loop buffer system is used, the buffer must be cooled prior to returning to port 7.
Otherwise, heat generated by seal friction will build up in the buffer, resulting in shorter seal life. If
an open loop system is used, an orifice or valve on port 2 should be used to regulate flow to
proper value.
NOTE The compressor casing of units with double liquid seals must be drained prior to starting.
C. SEAL FLUSH – An optional seal flush system is available for use with single or tandem gas seal
arrangements when the process gas is contaminated with dust, dirt, or any other types of solid
particles. A clean, cool gas, either from external sources or cooled, filtered gas throttled from the
discharge is introduced into port 5 or 6 at a pressure slightly higher than suction pressure. Thus,
only clean gas will contact the seal face minimizing erosion and seal deterioration.
A flush is not required with a double gas seal due to the flushing action of the buffer leakage
across the lower seal.

8
D. PORT 1 PIPING – Units equipped with gas seals must vent case drain port 1 to atmospheric
pressure and allow it to gravity drain properly. Otherwise oil could contaminate the outboard gas seal.
This port can be attached to a flare line, but should not have back-pressure in excess of 5 psi.

9
Baseplate Grouting
A rigid concrete mounting base is recommended for all installations. Use a non-shrink grouting to fill the
baseplate grout-fill holes. The concrete foundation should have minimum deflections and freedom from
resonant frequencies in the operating range of the equipment being supported. The stand shall be
secured in position by one inch diameter bolts. The bolts shall be installed in the foundation with sufficient
length to protrude one quarter inch above the nut. The customer shall provide a 4” x 4” x 1/4” steel plate
under each leveling screw.
BMC UNITS WITH HORIZONTAL STANDS: The base plate should be leveled prior to grouting. Grout
shall set for the time limit as determined by the grout manufacturer.
LMC UNITS WITH VERTICAL STANDS: The top of the stand (driver mounting surface) should be
leveled by shimming under the base prior to grouting. The channels are to be filled with grout through the
access holes. The nuts on the foundation bolts should not be tightened until the grout has set as
determined by the grout manufacturer.
Horizontal Unit Gearbox Support Bracket
A gearbox support bracket (BK01AW04) is attached to the gearbox bearing plate and provides support to
the gearbox in the horizontally mounted configuration. The bracket is a two-piece slotted hole design
attaching the two pieces to provide adjustability in the field during field installation alignment. A shim (1/4”
thickness preferred) should be placed under the bracket and alignment completed. The bracket should
then be drilled and pinned (3/8” minimum pin diameter) in two locations to prevent possibly shifting of the
bracket during operation of the unit.
Driver and Coupling
Lock out starting switch on driver prior to working on coupling, following lock-out/tag-out
procedure.
UNITS WITH VERTICAL OR HORIZONTAL STANDS - ALIGNMENT--
If other than Sundyne supplied couplings are used, they must be flexible disc or gear type couplings
capable of tolerating parallel and angular misalignment of .005 inch maximum as well axial end play of
.060 inch maximum. Always refer to the coupling manufacturers recommendations for installation and
maintenance.
The motor and compressor coupling hubs are normally installed at the factory. For alignment
specifications, see Coupling Manufacturers Bulletin in the Final Data Package. Align the driver and
compressor after grouting and before you connect the suction and discharge piping. After you install the
piping, inspect the alignment again.
2. Lubricating Oil System
Oil Specification
The oil used in Sundyne gearboxes must meet the specifications presented in Field Engineering
Bulletin 40.2.04. In general, an ISO viscosity grade 32 oil will meet these specifications. Before using any
oil, you should verify its properties by consulting its manufacturer..

10
Field Engineering Bulletin
Sundyne & Sunflo & HMP Gearbox Lubricant Recommendations
EFFECTIVE :MAY 2006 Rev: E
For years the preferred gearbox lubricant for Sundyne pumps and compressors has been automotive
automatic transmission fluid (ATF). However, over time the additives in automatic transmission fluid have
changed to coincide with the technical improvements in automobile transmissions. The additives in the
new formulations of ATF, such as Dexron III, have been found to have negative effects on Sundyne
gearboxes and could compromise mechanical integrity and reliability of the equipment.
ISO Viscosity Grade 32 or 46 general purpose or synthetic oils are the recommended lubricants for
Sundyne gearboxes as shown in Table 1 below. ISO VG 46 lubricants are now recommended for high
horsepower gearbox models 33X and 34X with spherical roller bearings and high ambient temperature
installations. Gearbox lube oil should be changed twice yearly or more frequently in severe environments
which may be detrimental to the lubricant. Oxidized oil is frequently characterized by a darkening and/or
thickening of the oil. Operating of gearboxes with oxidized lubricant should be avoided.
Synthetic oils possess different characteristics than conventional mineral oils which make them desirable
for various extreme conditions such as high and low temperature operation. Synthetic oils offer very low
pour points, high temperature oxidation stability and a higher viscosity index.
The operation of Sundyne equipment in high or low ambient conditions may require special consideration
of gearbox lubricant and/or supplemental protective equipment such as heat exchangers or gearbox
heaters.
The lubricant chosen must be compatible with gearbox elastomers, Viton and Buna N. Any oil that
contains an inert additive such as PTFE, molybdenum disulfide or silicon should not be used in Sundyne
gearboxes. Use of lubricants containing inert additives will void the product warranty.
Table 1:
Use ISO Viscosity Grade 32 Lubricant ** Use ISO Viscosity Grade 46 Lubricant
Models: LMV/BMP-311
LMC/BMC-311F
LMC-BMC-311
LMV/BMP-313
LMC/BMC-313
LMV-322
All Sunflo Gearboxes
HMP-3000
HMP-5000
Models: LMV/BMP-331 LMV/BMP-341
LMC/BMC-331F LMC/BMC-341F
LMC/BMC-331P LMC/BMC-341P
LMV/BMP-333 LMV/BMP-343
LMC/BMC-333 LMC/BMC-343
LMC/BMC-337 LMV-346
BMP-338 LMC/BMC-347
BMP-348
** Use ISO VG 46 lubricant for high ambient temperatures above 40 °C (100 °F).

11
Recommended ISO VG 32 gearbox lube oil specifications:
Gravity, API 28 - 37
Pour Point, °C (°F) -7 (20) max.
Flash Point, °C (°F) 204 (400) min.
Viscosity,
cSt at 40°C
cSt at 100°C
SUS at 100°F
SUS at 210°F
28.8 to 35.2
5.2 min.
150 to 180
44 min.
Viscosity Index 95 min.
ISO Viscosity Grade 32
Color, ASTM D 1500 1.5
Neutralization Number, Maximum 0.20
Rust Protection, ASTM D 665, A & B Pass
Demulsibility, ASTM D 1401
Time to 0 ml emulsion
at 54°C (130°F) after 30 min.
at 82°C (180°F) after 60 min.
Pass
Pass
Foam Limits, ASTM D 892
Sequence 1
Sequence 2
Sequence 3
25/0 max.
50/0 max.
25/0 max.
Note: No other additives are recommended.
Recommended ISO VG 46 gearbox lube oil specifications:
Gravity, API 28 - 37
Pour Point, °C (°F) -7 (20) max.
Flash Point, °C (°F) 204 (400) min.
Viscosity,
cSt at 40°C
cSt at 100°C
SUS at 100°F
SUS at 210°F
41.4 to 50.6
6.5 min.
217 to 260
48.8 min.
Viscosity Index 95 min.
ISO Viscosity Grade 46
Color, ASTM D 1500 2.0
Neutralization Number, Maximum 0.25
Rust Protection, ASTM D 665, A & B Pass
Demulsibility, ASTM D 1401
Time to 0 ml emulsion
at 54°C (130°F) after 30 min.
at 82°C (180°F) after 60 min.
Pass
Pass
Foam Limits, ASTM D 892
Sequence 1
Sequence 2
Sequence 3
25/0 max.
50/0 max.
25/0 max.
Note: No other additives are recommended.

12
Lube Oil System
The integral Sundyne lube oil system consists of the following major components: gearbox sump,
main lube pump, oil heat exchanger (if necessary), and oil filter. Oil is taken from the sump by the
lube pump, then passed through internal passages to an external integrally mounted manifold,
through the heat exchanger, then through the filter and back into the gearbox to the bearings. After
passing through the bearings, the oil drains back to the sump.
The gearbox sump holds approximately seven U.S. quarts (7.4 liters) of oil not including auxiliary
piping and heat exchanger. For wet sump gearboxes, fill gearbox within ¼” from top of oil level sight
glass. DO NOT overfill gearbox, as this will cause excessive foaming and overheating of the oil.
The main lube pump is a constant displacement gear type pump directly driven by the input shaft.
The standard heat exchanger is a shell and tube water cooled type mounted on the gearbox
manifold. Some low speed or low temperature units do not require a heat exchanger. For units having
a heat exchanger, cooling water should be provided at 150 psig (11 kg/cm2) maximum pressure. See
the specification sheet for cooling water requirements. Coolant flow should be controlled by a hand
valve installed in the cooling fluid discharge line to maintain a gearbox sump temperature between
140°F to 200°F (60°C to 93°C). Approximately one hour may be required to stabilize temperature.
The oil filter is a disposable pleated paper element type. Gearbox oil and filter should be changed
every six months.
Optional Lube Oil System Auxiliaries
A. LUBE OIL PRIMING KIT – A pre-lube system is required on units operating at high speed,
high pressure, or high horsepower conditions. It is also mandatory with the use of certain
auxiliary equipment. The kit consists of a motor driven positive displacement pump, check
valve, gages, and necessary piping. To start compressor, operate the pre-lube pump at least
30 seconds with a minimum of 7 psig (0.492 kg/cm2) indication prior to starting the main
driver.
The pre-lube pump is to shut down only after main driver is at full operating speed.
B. REMOTE HEAT EXCHANGER – Some large water-cooled and all air-cooled heat
exchangers are mounted off the gearbox. Except for packaged units, the interconnecting
piping is the purchaser’s responsibility. The heat exchanger MUST be mounted lower than
the oil filter; otherwise, air pockets may be present in the lube oil lines at start-up, causing oil
starvation at the bearings. Equivalent length of piping and fitting must not exceed 20 feet
(6m), using minimum of 3/4” (19mm) I.D. tubing or pipe. If greater pipe lengths are required,
pipe diameter must be increased accordingly.
C. GEARBOX SUMP HEATER – A sump heater is required when ambient temperatures may
fall below the temperature at which the gearbox oil becomes too viscous for proper lube
pump operation. Both steam and electric sump heaters are available. The lube oil priming
pump must be operated anytime the sump heater is in operation.

13
3. Start-up
If a Sundyne supplied control panel is to be used with the Sundyne LMC/BMC compressor, use the
control panel recommended start-up procedure in addition to the steps below. Before starting the
LMC/BMC compressor, complete the following procedure in the order in which the steps are
provided:
Step 1: Make sure that the driver has been serviced as per manufacturer recommendations.
Check motor rotation before installing coupling.
Step 2: For the auxiliaries: Check the connections of the utilities; verify that the auxiliary piping
meets the requirements shown in the Outline Drawing.
Step 3: Install flushing screens in all field-assembled piping connections. Clean these screens
prior to commissioning. Check frequently for cleanliness and clean as needed.
Step 4: Drain any liquids (blow-down) from the compressor and inlet pipe.
Step 5: Prime the lubricating system, as follows:
•Fill the oil reservoir with lubricating oil in accordance with the Field Engineering
Bulletin Gearbox Lubricant Recommendations.
•Add oil as necessary through the fill opening.
•With wet sump compressors, add oil as necessary until the oil level stabilizes at
the top of the bull’s eye in the sight glass. With dry sump, check oil level at
reservoir sight glass.
•Start the auxiliary lubricating pump, and run it until the oil reaches the correct
pressure and temperature. Add oil as necessary until the oil level stabilizes 3/4
of the way from the bottom of the sight glass.
•Allow lube pump to operate for at least 30 seconds with a minimum of 7 psig
(0.492 kg/cm^2) indication prior to starting the main driver.
Step 6: Turn on the cooling water to lubrication systems heat exchanger (if applicable), or turn on
air cooled heat exchanger. Verify high points (e.g. heat exchanger and filters) have been
vented.
Step 7: For double seal configurations, the buffer system must be pressurized to the pressure
specified on the spec sheet and on outline drawings prior to pressurizing the unit.
Step 8: Charge the compressor with process gas.
Step 9: Start compressor, following process control startup procedures.
Step 10: Once the gearbox oil temperature has stabilized, adjust cooling water supply until the oil
temperature to the bearings is 120º - 160ºF on units equipped with water cooled heat
exchangers. Maximum recommended temperature is 180ºF.

14
Compressor Control During Start-Up
Single Units:
A. Suction throttling (preferred method). Start compressor with the discharge valve open
while throttling the suction valve to bring the compressor to the design operating
point.
B. Discharge throttling. Start the compressor with the suction valve completely open
while throttling the discharge valve to bring the compressor to the design operating
point.
C. Other Methods – Insure that the compressor does not go into surge (flow too low) or
that the design horsepower is not exceeded (flow too high) while starting or operating
the compressor. Check units specification sheet for flow limits
Series Operation:
In series operation, it is necessary to have a bypass from the discharge of the second stage
back to the suction of the first stage. A check valve should be placed in the discharge line
downstream of the bypass. Typical start-up procedure is as follows:
A. Open the suction and discharge block valves and the bypass valve.
B. Start the second stage unit and maintain stable operation.
C. Start the first stage unit and maintain design flow to both units.
D. When sufficient pressure is being produced to overcome system back-pressure, the
check valve will open and the units will be on stream.
E. Close the bypass valve, being sure that the flow to the compressor is above the
surge point.
Parallel Operation:
Check valves must be placed in the discharge piping of each compressor to prevent back-
flow when one unit is started prior to the others. It is advantageous to install separate bypass
loops around each compressor for additional operational flexibility.
The first unit may be started as described above for single units. However, prior to starting
the second unit, it is preferable that the on-stream unit not be operating near its peak head
capability. This will lessen the chance of surging when the second unit is started.
Run-In of the Compressor
If the compressor is to be run-in or mechanically tested under conditions which are
considerably different from those that the unit is designed for (such as gas molecular weight,
suction pressure, flow rate, etc.) Sundyne should be consulted to insure that the run-in
conditions are compatible with the compressor.

15
4. Servicing
General Requirements
To increase the operating life of your compressor and keep it in good operating condition, you should
inspect and service it regularly. Measure all of the operating parameters documented in the specific
maintenance procedures and log your measurements. Make sure that all major equipment, such as
lubricating pumps, heat exchangers, and instrumentation, perform according to the manufacturer’s
recommendations. Whenever you find a deviation from specifications, identify its source immediately,
and take any corrective steps that are required to bring the unit into manufacturer’s specifications.
Regular Maintenance
Gearbox Oil
Check the level of the oil in the gearbox immediately before and after initial start-up, and regularly
while the compressor is running. Be sure to keep the level of the oil within the gearbox design limit.
The oil level must be maintained within the MIN/MAX range on the sight glass.
You can add oil to the wet sump gearbox while the compressor is running. See tagging information
on gearbox for where to add oil during operation. This location is different from the initial fill location.
Each must be used for its tagged purpose. Overfilling the gearbox will cause excess foaming and
overheating and should be avoided at all times.
Oil may be added to the external reservoir of the dry sump gearbox at the fill port.
Oil Pressure
The correct oil pressure from the main pump of the gearbox depends on the configuration of the
bearings and the characteristics of the lubricating oil used. In the normal operation, the oil pressure
supplied to the gearbox should be between 18-60 psig (1.2 - 4.2 Kg/cm2 ) (15 psi alarm, 10 psi
shutdown).
Changing the gearbox oil and filter
Change the oil in the reservoir and the oil filter elements every 6 months. SFHC recommended
synthetics may go for a longer period of time before an oil change out is required. For dual oil filter
units with a transfer valve, vent and fill the idle oil filter before operating the transfer valve.
Seal Leakage
Seal leakage out of port 1 should be checked periodically. Seals should be replaced if leakage
increases to an unacceptable level. With double seals, buffer pressure and usage should be
monitored to insure that seals are functioning properly.
Driver
Inspect the driver to make sure that it performs according to the manufacturer’s specifications.
Coupling
Inspect the coupling according to the manufacturer’s specifications. Never operate the compressor
without first checking the coupling guard. A compressor with a missing or incorrectly installed guard
could cause serious or fatal injury.

16
5. Maintenance of the Seals and Process End Disassembly
This section provides the procedure for disassembling the LMC/BMC compressor and its seal
housings for maintenance of the seals. The gearbox assembly is shown in Reference D, gearbox
module drawing.
Follow your organization’s Lock-out/Tag-out instructions before working on the
compressor. Failure to follow adequate Lockout/Tag-out procedures could cause serious injury.
Follow your organization’s procedures for blocking in or isolating the compressor from the process,
for depressurizing, and for decontamination before disassembly.
Tandem Seal Configurations
Depressurize the seal buffer system before depressurizing the compressor, otherwise reverse
pressure may cause the inboard seal to fail.
Double Seal Configurations
The compressor must be depressurized before the seal buffer system is depressurized, otherwise
reverse pressure may cause the inboard seal to fail.
Item numbers refer to the numbers in Reference D, gearbox module drawings.
The following procedures apply to all configurations of the Sundyne LMC/BMC compressors. Refer to the
specification sheet to determine the specific configuration and optional equipment included in your unit.
Parenthetical numbers in the text correspond to item numbers in the illustrations and parts lists.
Procedure for Disassembling Process End
The following replacement parts will be required as a result of compressor disassembly and seal
housing removal:
Table 5.1
PART DESCRIPTION ITEM
NUMBER QUANTITY
O-Ring Packing 936B 1
O-Ring Packing 936C 1
O-Ring Packing 936D 1
O-Ring Packing 936E 1
O-Ring Packing 936F 1
O-Ring Packing 936G 1
O-Ring Packing 936H 2
O-Ring Packing 936J 3
Single Seal 60A 1
Double Seal 60A, 60B 2
Tandem Seal 60A, 60B 2
Thermal Barrier Gasket 87A 1
NOTE:
An O-Ring repair kit is available. This kit contains the O-Rings required to replace the gearbox
and compressor mechanical seals.